New model suggests rats show empathy, with limits
Bottom line
Researchers at Ruhr University Bochum say rats do show empathy, but not in the same way humans do. In a paper published June 28 in Biological Reviews, the team introduced a multidimensional, species-sensitive model designed to compare empathy across animals rather than treating it as an all-or-nothing trait. Applying that framework to rodents, the authors argue that rats show affective forms of empathy, including emotional recognition and helping behavior, but lack stronger evidence for higher-order sensitivity to another animal’s mental state beyond basic emotion registration. The work builds on earlier rat studies, including the widely cited 2011 experiment in which rats freed trapped cage-mates and then shared food. (onlinelibrary.wiley.com)
Why it matters: For veterinary professionals, the study adds to a growing body of evidence that rats are socially complex animals whose behavior may reflect more than conditioning or simple stimulus-response patterns. That matters in laboratory animal medicine, comparative medicine, welfare assessment, and clinical handling, because social context, familiarity, stress, and distress cues can shape rodent behavior and potentially affect both welfare outcomes and research interpretation. Prior reviews of rodent empathy research have also pointed to prosocial behavior, emotional contagion, and modulation by familiarity and stress, reinforcing the need for careful environmental and behavioral management. (sciencedirect.com)
What to watch: Watch for follow-up work testing the model across additional species and for whether rodent welfare and behavioral research begins using more nuanced empathy profiles instead of a simple yes-or-no definition. (onlinelibrary.wiley.com)
Key facts
- Institution
- Ruhr University Bochum
- Journal
- Biological Reviews
- Publication date
- June 28, 2026
- Main finding
- Rats show affective empathy, including emotional recognition and helping behavior
- Limitation
- No strong evidence for higher-order sensitivity to another animal’s mental state
- Model
- Multidimensional, species-sensitive empathy framework
- Species compared
- Rodents, apes, canids, and corvids
- Earlier study cited
- 2011 study in which rats freed trapped cage-mates and shared food
Rats may be more emotionally attuned to one another than many people assume, according to a new analysis from Ruhr University Bochum. In a Biological Reviews paper published June 28, 2026, researchers proposed a multidimensional model of empathy and used it to argue that rats do exhibit empathy, though in a more limited form than humans. Their central point is not that rats possess human-like perspective-taking, but that empathy across species should be described as a profile of capacities rather than a binary label. (onlinelibrary.wiley.com)
The paper arrives in the middle of a long-running debate in comparative cognition. Rat helping behavior has been discussed for years, especially since a 2011 Science study found that rats would free trapped cage-mates and, in some cases, share chocolate afterward. Supporters saw that as evidence of empathy-driven helping, while skeptics argued the behavior could reflect social reward, curiosity, or distress reduction rather than empathy itself. Ruhr University Bochum’s team explicitly positions its new framework as a way to move beyond that stalemate. (news.rub.de)
According to the authors, the new model evaluates empathy through multiple measurable dimensions, allowing cross-species comparisons without forcing animals into a human standard. In the paper’s abstract, the team says the framework is meant to answer not only whether animals show empathy, but what kind or quality of empathy they show. The authors applied the model to rodents, apes, canids, and corvids, and concluded that each group has a distinct empathy profile with predictive value for behavior in more complex social situations. (onlinelibrary.wiley.com)
For rats specifically, the researchers conclude that the animals can register the emotional states of others and respond in ways consistent with affective empathy, including helping behavior. But they stop short of attributing robust higher-order mindreading. As Ruhr University Bochum summarized in its press material, rats appear to lack sensitivity to another’s mental state beyond basic emotional recognition. Phys.org’s coverage, based on the university release, quoted senior author Albert Newen saying that rats’ helping behavior can be understood as empathy, but “not the same type of empathy as seen in humans.” (news.rub.de)
That interpretation fits with the broader rodent empathy literature. A 2016 review in Neuroscience & Biobehavioral Reviews concluded that rodents are capable of emotional contagion and prosocial behavior, while noting that familiarity, physical similarity, stress level, and sex can all modulate these responses. A 2017 Nature Reviews Neuroscience review likewise described mammalian empathy as layered, ranging from emotional contagion to more cognitive forms, and emphasized that spontaneous helping of distressed conspecifics has been documented across mammals. (sciencedirect.com)
For veterinary professionals, the practical relevance is less about philosophical labeling and more about what it implies for animal care and interpretation. If rats are sensitive to the distress of conspecifics, then housing, handling, transport, experimental design, and recovery conditions may all influence behavior in ways that matter for both welfare and data quality. In research settings, that could strengthen the case for paying closer attention to social grouping, familiarity, and distress signaling. In clinical and shelter-adjacent settings involving companion rats, it also supports a more behaviorally informed approach to pair or group management, enrichment, and stress reduction for pet parents and care teams. (sciencedirect.com)
The study also reflects a broader shift in animal cognition research toward graded, species-sensitive models instead of human-centered checklists. That may be especially useful in veterinary and comparative medicine, where professionals often need to make welfare judgments without over-interpreting behavior. A profile-based framework could help researchers and clinicians distinguish between emotional contagion, prosocial motivation, and more cognitively complex social understanding, which are not the same thing even if they can look similar in practice. This is partly an inference from the paper’s framework and the surrounding review literature. (onlinelibrary.wiley.com)
What to watch: The next step will be whether this multidimensional model is adopted in future animal behavior studies, especially in work comparing species or refining welfare assessments, and whether new experiments can better separate affective empathy from other drivers of helping behavior in rats. (onlinelibrary.wiley.com)